Lignite-orate



A. A. RUIVIREICH.

LIGNITE GRATE.

APPLlcATxoN FILED ocT.9.19|a.

1,381,887. PatentedJune 14, 1921.

355126Z 2276 u 777 TEZ'C o www DALBERT A. nomineren, oF Prsnx, NORTH DAKOTA.

LIGNITE-GRATE.

specification of Letters Patent. Patented June 14, 192.1"

Application led ctober 9, 1918.- Serial'No. 257,451.

To all whom 'it concern.' v

Be it known qtliii/t I, ADALBERT A. RuM- RnroH, a citizen of the United States, residing at Pisek, in the county of Walsh and State of North Dakota, have invented. new and useful Improvements-in Ligi'iite-Gfrates, of which the following is a specification.

This invention relates to the art of stoves and furnaces and relates specifically to an improved construction of grate adapted for use in the consumption oflignite and the like.

The object of this invention is to provide a grate which is adapted for use in stoves of various sizes and designs; which may be applied to the stoves without altering the construction thereof; which maybe adjusted to laccommodate the grate to stoves varying in size so that the grate may be proportioned to the size and'character of the stove for maintaining the desired amount of fuel in the irepot, which may be used in combination with the ordinary stove grate; and to provide a grate which isadjustable for varying the amount of air which may be fed to the middle portion of the bulk o fuel supported on the grate.

The grate of this invention also embodies a construction wherein the grate may be mounted in the firepot of a stove by the removal of the grate and shaker ring, or by the removal of the grate alone.

Heretofore lignite has been discarded on account of the necessity of providing separate stoves for its consumption, and it is the design of this invention to provide a grate which may be used in the ordinary stove when lignite is to be burned, and which may be removed when ordinary coal may be obtained. Thus shortage inthe supply of coal may be offset by the consumption of the lignite. It is well known that lignite packs upon the grate and air has no access to the middle of the mass and consequently upon shaking the grate a large amount of the unconsumed lignite falls into the ash pit and not only is lost but also unduly heats the ash pan and prevents the satisfactory handling of the ashes.

The above, and various other objects and advantages of this invention will be in part described in, and in part understood from, the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawings, wherein:

Figure is a vertical fragmentary section v through the fire pot of a stove having a grate constructed according to the present invention mounted therein. i

Fig. 2 is a detail top tering device or holder. i

Fig. 3 is a fragmentary, enlarged view in section of adjacent grate sections with an adj u stablel connection therebetween.

Fig, 4 is a top plan view of the same. While the accompanying drawings illustrate the preferred vention, it is to be understood that the grate may be of any suitable size, shape, material and number of sections to meet practical demands of the usery and the manufacturer. Referring to the drawing wherein` like parts are designated by similar numerals of reference throughout the several views, 12 designates the fire pot of a stove and 1l the inwardly extending lugs for supporting the usual grate 26, the latter having a suitable shaker handle 27 extending outwardly through the front of the fire pot 12.

The grate of this invention comprises a plurality of superposed grate sections 22, and a top grate section 2O spaced above the lower sections 22. Each section 22 is of frusto-conical form to admit air upwardly therethrough and the top section 20 is of conical shape to support the lignite from falling through the sections 22. In Figs. 2 and 4: there is shown one means for connecting the sections of the` grate together, the views showing the intermediate sections only, although it will be understood that the base and top sections may be similarly connected with adjacent parts. In this structure each section 22 is provided with a desired number of lugs or projections 23 at its upper edge adapted to lap beneath 'the adjacent upper section. Each lug 23 has a substantially radially extending slot 24 through which a bolt 25 is adapted to pass, the bolt being adjustable in the slot 24 for permitting the sections to be properly spaced apart. The bolt 25 is secured through the lower edge portion of the upper section and preferably has its head countersunk in the outer face of the section. The bolt 25 forms a connection between the sections and admits the adjustment of the sections one upon the other to vary the air space between the sections.

The sections. are held spaced apart by the interpositioning of spacers about the .bolt and between the sections. A bolt 25 and the plan view of the cenembodiment of this neach lug23, and as manyrsections as desired may be built up to form a grate'of the desired Vsize'to'flt stoves lof variousv sizes.

The top section is of conical form and yforms a cap for the grate structure to prevent the lignite from falling'through the Y center of the device.

The improved grate structure is maintained in centered position byv a holder 28. The holder 28 is in the former' a spider the arms of whichare rovided upon their outer ends with upward y facing hooks or sho1il-\ ders 29 directed inwardly and adapted to engage the .marginal edge portionl of the lower'section 22 tol revent lateral displacement thereof. The o1derf28 is held in place on the grate 26 by adjustableI blocks '30 slid-y l able against the underside of the spider arms and supported and clam ed in position by bolts 31 which are slida le in radial slots' 32 in the spider arms.

The blocks 30 are adapted to project intovthe spaces between the lbars of the usual grate 26k for holding the spider and the improved grate rigidly in osition. p

n the use oflthis lignite grate, it may belaoed in any stove or furnace of standard orm, upon the ordinary grateof -the ordinary stove or furnace as above set forth. The lignite grate may be adjusted in the number ofsections and size of air spaces to accommodate the grate to the stove or fur. nace and obtain the best results therefrom.

The grate bodysupports the mass of fuel.

inthe desired position in the irepot and insures the distribution of air centrally and evenly up through the grate and out into the mass. n

An important feature of this invention is the adaptability of the grate to stovesand furnaces of various sizes without the neces'- sity of providing specially constructed stoves and furnaces for the combustion of the lig, nite. Of course the sections may be made circular as shown for cylindrical stoves and furnaces, or may be given any other desired configuration for use with other shapes and I constructions of the stoves and furnaces, the adjustability and adaptability still prevalllng.

The mass of lignite while burning'and y slakening settlesdown over the inclined surfaces of the grate sections, and is supported on the grate 26, and the ashes'may be sifted through the latter by shaking in the'jusual manner.

The grate may, of course,'be used with other fuel than lignite, but it is designed \part1cularly for this use as prior structures have prohi ited the satisfactory handling of the lignite. e l

What 'is claimed is:

1. ln combination with the ordinary stove grate, a supplemental grate composed of a conical .section and at least one frusto-coni cal section, means to hold the sections sepa* rated whereby air openings are provided therebetween, said means being adjustable to vary the area of said air openings, means for adjustably securing the sections together, a base receiving said lowermost grate sect1on, v and adjustable blocks carried by said base and fitting in the openings of the ordinary grate.

2. In combination with l.the ordinarylstove grate, a base fitted thereupon and havingradial slots therein, blocks movable below and in the directions of said slots, means adjustable in said slots for supporting said block s, said blo'cks adapted to enter lthe openlngs 1n the ordinary grate, and a supplemental grate supported on said base.l

3. In combination with the usual stove 

